rbraun/x15.git - The X15 microkernel

Age	Commit message (Collapse)	Author
2018-04-21	Fix atomic operations argument types	Richard Braun
	In preparation of the rework of atomic operations, all atomic function calls are fixed to use fully supported, compatible types. This means that atomic operations ar erestricted to 32-bit and 64-bit, and that value types must be strictly compatible with pointer types.
2018-04-19	kern/atomic: remove shortcuts	Richard Braun
	These shortcuts just don't bring enough value.
2018-03-03	kern/spinlock: minor comment fix	Richard Braun

2018-03-02	kern/spinlock: fix and optimize	Richard Braun
	Making the unlock operation block allows tricky deadlocks to occur in case a thread is interrupted right before announcing itself as the first waiter in the queue. Since locking is expected to block, the spinlock implementation is reworked to move the hand-off performed by the unlock operation into the lock operation. As a side effect, the common case of a single waiter is also optimized.
2018-02-24	New errno.h standard header	Richard Braun
	Use standard errno codes. This change also adds strerror to string.h.
2018-02-22	kern/spinlock: add ownership tracking as a debugging feature	Richard Braun

2017-09-21	New build system	Richard Braun
	The new build system, called xbuild, is a minimalistic kbuild-like make-based build system, also using kconfig for scalable configurations.
2017-07-13	Switch to initialization operations	Richard Braun

2017-06-25	Use the C11 alignas and noreturn macros	Richard Braun

2017-06-02	kern/spinlock: describe memory order constraints	Richard Braun

2017-06-02	kern/spinlock: use new atomic accessor macros	Richard Braun

2017-05-30	Move assert.h to the include directory	Richard Braun
	This turns assert.h into a standard header.
2017-05-29	kern/spinlock: replace xxx_once macros with atomic accessors	Richard Braun

2017-05-10	kern/spinlock: use atomic accessors instead of memory barriers	Richard Braun

2017-05-09	Replace sequential consistency with more efficient orders	Agustina Arzille

2017-04-29	Revert "Remove unneeded quotes when using #error"	Richard Braun
	This reverts commit b1aa94d0c7dba4138f651e6b081c1a0055ea8d54. New occurrences of #error are also affected by this commit.
2017-04-04	Use the new atomic operations interface	Agustina Arzille
	Stick to a sequentially consistent model for most atomic operations as it matches the semantics of the existing code. Each call site will have to be reevaluated in order to switch to more relaxed accesses where possible.
2017-04-03	kern/spinlock: new fair and scalable implementation	Richard Braun
	This new implementation, based on the MCS locks, provides rigorous fairness and excellent scalability.